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Finding the Fourth Proportional to 408,046.30, 612,069.45 and 248,379.10

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Solution

The fourth proportional to 408,046.30, 612,069.45 and 248,379.10 is: 372,568.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,046.30 : 612,069.45 = 248,379.10 : x
  2. Step 2: Convert to fraction form
    408,046.30/612,069.45 = 248,379.10/x
  3. Step 3: Cross multiply
    408,046.30x = 612,069.45 × 248,379.10
  4. Step 4: Simplify right side
    408,046.30x = 152,025,259,128.50
  5. Step 5: Solve for x
    x = 152,025,259,128.50/408,046.30
  6. Step 6: Final answer
    x = 372,568.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.